The only thing to do in that situation is retreat, try to close space and angles while your teammates recover.
Dias looks to have bought into the hype of being a body-on-the-line warrior - it became apparent towards the end of last season when he was made to look silly by going to ground at every opportunity, and there were examples of it yesterday aswell, like when Gallagher turned inside out in the box and got a shot off. He needs to settle down, and Stones seems to have a calming effect on his chaotic tendencies.